所属单位：冶金工程学院

发表刊物：International Journal of Cast Metals Research

关键字：中文关键字：合金;凝固;形核;结晶，英文关键字：Alloys;Solidification;Nucleation;Crystallography

摘要：A novel method for nucleation and detachment of dendrites from a vibrating chilling solid surface inserted into the NH4Cl–H2O alloy melt has been proposed to further increase the proportion of equiaxed grains in the solidification microstructure. The surface nucleation and evolution behaviours of dendrites on the chilling generator with vibration were observed, and the effects of vibration frequency as well as amplitude on the equiaxed crystallographic morphology were also experimentally studied. The results show that exerting vibration to the chilling generator is helpful to not only prevent the formation of solidifying shell but also promote to form equiaxed grains microstructure, and that the higher vibration frequency and amplitude are, the much finer equiaxed grains are obtained.

备注：王文礼

第一作者：王快社,王文礼

论文类型：期刊论文

卷号：卷：23

期号：期：1

页面范围：页：65-68

是否译文：否

发表时间：2010-02-01